Advertisements
Advertisements
प्रश्न
The factors of x2 – 4 are ______.
पर्याय
(x – 2), (x – 2)
(x + 2), (x – 2)
(x + 2), (x + 2)
(x – 4), (x – 4)
Advertisements
उत्तर
The factors of x2 – 4 are (x + 2), (x – 2).
Explanation:
We have,
x2 – 4 = x2 – 22
= (x + 2)(x – 2) ...[∵ a2 – b2 = (a + b)(a – b)]
Hence, (x + 2), (x – 2) are factors of x2 – 4.
APPEARS IN
संबंधित प्रश्न
Identify the term and its factor in the following expression.
Show the term and factor by tree diagram.
x − 3
In -5x3y2z4 ; write the coefficient of y2 Also, write the degree of the given algebraic expression.
Add : 4 + x, 5 – 2x and 6x
Find the numerical co-efficient of the following term:
−3yx
Area of a rectangular plot with sides 4x2 and 3y2 is ______.
Factorise the following expression.
y2 + 8zx – 2xy – 4yz
Factorise the following expression.
ax2y – bxyz – ax2z + bxy2
Identify the numerical coefficient of term (other than constant) in the following expression:
x + 2xy + 3y
Coefficient of x in –9xy2z is ______.
– a – b – c is same as – a – (______).
